It's actually a very traditional style except for a lot of sparring.
Actually it's a hybrid style.
Oyama first trained in Shotokan but also later Goju Ryu
Nowadays there's even more off shoot styles in this direction.
Oyama was influenced by other styles but of course he went in his own direction.
If you can call his style traditional is debatable.
I can call Judo traditional but you'll argue it's not " ju jutsu"
I think you get my point.